Chabubs joseph albert dalziel



J. A. DALZIEL.

PROCESS OF EXTRACTJNG METALS.

APPLICATION FILED MN. 57. i920v Patented June 29, 1920.

INVENTOR. Clfflflaizic, m M mm;

WITNESS:

*CHARLES JOSEPH ALBERT DALZEEL. OF LONDON, ENGLAND! PBOGESS OF EXTRfiCTZlIG METALS.

fiogliuaiion fiicd January 13' 192a To all whom ii money? Be it llllOWE; ill 1 muss Jul-1m BERT iii-J3EE a, snli iw i; El iii? Britain ulioso 11:51 M W s in Lo land, have jm'a iii'ieu vermin new A Improvomoms ill irooesses of Enro -la: Metals, of whioh the following is a 55mm 7 tiou, v

The oresent invention roiaues $1; cover 5% matals from their ores, l

licahio to the tiaatmout of on at or of dif wutla which the pulpoil wil :11: a5, i tion I 03 Qlwjii'olj'lli' metal.

The Olly-11 5 al very complete QEUQULIOH of tho me a tent of the ores with the ozngiioyoa soi oi minimum Quantity of the irllQIlll! lob. l soluti in, s oily i! :1 moral Mania 2 1 .um too reagent is oulrryizig out we process. v

.in'co li H to tho lm'ainilon the niolzu tr;

extras ii and prooiplintoil :lirw-tly i I'UZii era in u siug'lo oomimmus operation, willy out the vusmuuu' film lion al an hi2 of the operation. The Hilglfalili! to no" ui monip! rlfilifiiihl rims of elw-iia'oiyllli: colh; in which tho pulp is likowise agituia eil and uorutwl coniimmmly ln' a blast of air intrmlumwl up th hnfluni ol' fiiwh o will toils to b3: prom-m mjwuai" H all it HFIlA' r Ssziai NO. 352051 i'lllllwlllfitlflfl in the cells which who is M: likely tooocm.

wompmaying drawing shows an aplll'UTQi-S a the pros-lent wotioza may he mnveniently carried out.

r le elevation of the entire apparatus, and 'm 2 is :1 VPY'tl ILl section of one of the elecii calla w foil into the proparutoqv vessels 1 H ll 1" through uhutes 2 in regulated quan- Yahoo or gziies 2 as indimted, regus v {ho lion of A loucl] solution is m 1 1%,. h; ry-h 1101131: oz-y vessel from a tank i h g-lgws 'i'll'li provided with a who 1, iiiu amoun of solution fl'll being Sll li us lo produm: a thin flowahle pulp in film preparatory w. I prefer to intro- !lw um and tho 7. illltlUIl simultaneously 'i ilww iii lw more or less agitation at. iliifl'ilii' jli by the, materials themiiwy (ruler {he r-repaz'atory vessel or {"Silm on M 50 illow :1 complete suspension no in i? HIQXIQH'EKLOF) vessels a blast on in ilu'ough a perforated I; at the wU-ilfilfll of each vessel. The air inn-mhmgli lQFuiElCPS aeration anri agi' minim of too ml so that a more or less lwnmgenvom, fl owahle pulp is produced and fla ow pnrtiolos on: hold at all times in suspolish! Fhe air thus introduced also serves solution of the metal wudeil ore.

lwixzg thus thoroughly aerated ei ullowe-d to iiow off through ilEH i smw orifviit in Poms luwl in ii: so.

"lin- 5:2:

- wll+ Ming proviilell with insolu- 5 1S and sniiuhlv cathodes 16, and aiml with an air blast 1O looated at ill? bottom of Purl: vessel for the purpose of iimimniniug the ow in suispension therein i tizl i ir and amazing it. The Ii m1 wli in cell through suitab e horn-Prion: 11 and the exhausted ii'il liifi: pipe 12 provided :2 n's'railnmsgg valve 12. Suitable elae we uiwllons on iZHVlLlQLl at 13 a r l 11 -iiiliw :Hi i (TRihO OS. :moiliw HE? li iliili'iifl to it suitable Hi' lj ll 1T. wmowi l w filler positive Wire of ,A-m- 15k or other source of Fi m Patented, June 2 IQ BOQ ch drawing, Figure 1 is a diagrammatic the treatment of copper ores containing sulfide.

In my copending application No. 255,469, filed September 24, 1918 (of which the res ent case is in part a continuation), I ave claimed the application of the process to the treatment of oxidized coppeubearin sulfid ores, whereas in the present case i claim the application of the process to ores generically, and to precious metal ores specifically.

I claim:

1. A recess of treating metalliferous ores, which comprises continuously subjecting the said ore in a finely'divided state, in a leaching solution, at about atmospheric tem erature, to agitation produced solely by a b last of air of sufiiciept intensity and for a sufiicient length of time to produce a readily flowable thin pulp, and continuously assin such pulp through a series of electrolytlc cells, while agitating the pulp solely by an air blast sufiicient to prevent any such amount of sedimentation in the cells as would substantially obstruct the same.

2. A rocess of treating metalliferous ores, which comprises continuously subjecting the said ore in a finely-divided state, in a leaching solution containing a reagent capable of reacting with the metal content of said ore, the amount of such reagent above that required to neutralize or satisfy the other chemically active ingredients of the ore being only a fraction of the amount which would correspond to the amount of metal in said ore, to agitation produced solely by a gaseous blast of suflicicnt intensity and tore sullicient length of time to produc a readily flowablc thin pulp, and continuously passing sur-b pulp through electrolytic cells while agitating thepulp by a gaseous lllusl sufliriently to prevent any such umuuul ol sedimentation in the cells as would suhstnutullly obstruct the same.

A pl'ur-i' s of treating precious metal ores which lmuprises continuously subject ing the said ore in a finely-divided state, in a leaching solution, at about atmospheric temperature, to agitation produced by a gaseous blast of suflicicut intensity and for a sulficient length, of time to produce a. readily l'lowable thin pulp, and continuously passing such pulp through electrolytic cells;

while agitating the pulp solely by a gaseoi'ls blast sutliciently to prevent any such amount of sedimentation in the cells as would sub stantially obstruct the same.

4. A. process of treating ores containing gold whi h comprises substantially subjecting the said ore in a finely-divided state in a leaching solution containing a soluble c'anid. the amount of such cyanid above t lat required -to neutralize or satisfy the other chemically active ingredients .of the ore being only a fraction of that amen tially obstruct the amount V which would correspond to the w gold in the said ore, to tion produced by a blast of uo v "ant intensity and for a suflicient length ofitlmc to produce a readily flowable thin pul and continuously passing such pulp throng electrolytic cells, while agitating and aerating the pulp by a blast of air of sufiicient intensity to prevent any such amount of sedimentation in the cells as would substansame.

5. A process of extracting a metal from an ore containing the same, which wmprises subjecting the finel divided ore and it cyanid lei hing so ution containing an amount of cyanid, which is 511' v y less than that amount which would he cheats:

ically equivalent to the metal content-"0Q said ore, a readily flowable thin pulp, passing an pul once only through eectrolllytic cells Until the metal content of said p is commercially exhausted and arging the pulp from thesystem.

6. A process of treating metalliferous ores, which comprises subjecting said 01:05 in a finely-divided state, to a leaclu'ngsolution, containin a reagent capable of reacting with the metal content of the ore, the amount of which reagent is a fractipn only of the amount theoretically (after neutralizing or aatisfyin other chemically active substances present to dissolve the entire metal content of the ore.

7. A recess of treat' metalliferous ores, which com rises subjecting the said ores in a finelyivided state to a leaching solution, contalning a reagent capable of 1'91 acting with the metal content of the ore, the amount of which reagent is a fraction 011g, of the amount theoretically necessary (a er neutralizing or satisfyiu chemically active substances preseng to dissolve the entire metal content of the ore and continuously passing the ulpithrough electrolytic apygaratus while ingsubjected to a gaseous last suflicient to prevent sedimentation in said apparatus.

8. A rocess of treating metalliferous ores, which comprises subjecting said ores in a finely divided state, in a leaching solution, to agitation p duced by the introduction of a aseousb st containing substances capable 0 absorption by the leaching solution to produce chemical reagent capable of dissolving the metal content of the ore, such agitation being of suflicient intensity and for a sufiicient len h of time to produce a readily flowable t pulp, a, thereafter subjectin said pulp tmelect ysis for the purpose 0% depositing the metal tube recovered, while a 'tating saidpul 9. A recess 0 treating ores, WillCll comprises subjecting said, ores in a finely-divided state, in'a leaching soluto suflicient agitation to produce other. H

and name tion, to agitation produced by the inti oduc tion of a aseous blast COIltlLlHlDg substances capable 0 absorption by the leaching solution to produce chemical reagent capable of dissolving the metal content of the ore, such agitation being of sufficient intensity and for a suflicient length of i inn to produce a readily flowable thin pulp, and thereafter subjecting said pulp to electrolysis for the purpose of depositing the metal to be re- 10 covered, while agitating said ulp by introducing a similar gaseous blast into the same.

In testimony whereof, I have hereunto subscribed my name.

CHARLES JOSEPH ALBERT DALZ] EL. 

